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10-23-2017, 09:08 AM | #1 |
Join Date: Oct 2017
Posts: 93
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Hawk 250 - Is It Ok To Just Change Rear Sprocket?
So I would like to do the 17/45 sprocket changes that everyone recommends to gain some top-end speed on the highway on my Hawk 250. But I am nervous about going bigger on the front sprocket in the event of a chain failure resulting in a damaged case. Probably a one-in-a-million-rare chance but I dont want to chance it.
So I was informed that I can go with a 40-tooth rear sprocket and leave the stock front sprocket in place for the same gearing result as 17/45. Does this sound accurate? And will there be any disadvantage to changing just the rear sprocket to a 40-tooth? Just wondering if there are any disadvantages since people usually change both sprockets for this change, thanks. |
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10-23-2017, 09:25 AM | #2 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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40 tooth rear will be very close to the 17/45 combo with 15/40 being slightly lower. That's what I run when I go strictly off road. You can always change the front to a 16 or 17 later on if you plan on just street riding. Here is a link to a sprocket calculator. just type in Hawk in the filter and then select Hawk 250. http://woodsware.aciwebs.com/gears/ You can play around with that to figure out what you want to do. I'm currently running 16/40 because I have been doing about 50/50 on and off road cruising 55-60 mph on the highway.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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10-23-2017, 11:47 AM | #3 | |
Join Date: Oct 2017
Posts: 93
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Quote:
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10-23-2017, 11:53 AM | #4 | |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Quote:
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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10-23-2017, 12:18 PM | #5 |
Join Date: Oct 2017
Posts: 93
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Great! Thanks so much for your help!!
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10-23-2017, 12:20 PM | #6 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Only reason you would need to change both sprockets and chain is if your current sprockets are showing some wear.
__________________
2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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10-23-2017, 05:32 PM | #7 |
Join Date: Apr 2017
Location: Southern IL
Posts: 132
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I find this website to be handy: http://www.sprocketcalculator.com/
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